SpringBoot上传图片+ 添加文字水印
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.0.6.RELEASE
com.test
SpringBootWeb
0.01
SpringBootWeb
1.8
org.springframework.boot
spring-boot-starter
org.springframework.boot
spring-boot-starter-logging
org.springframework.boot
spring-boot-starter-log4j
1.3.8.RELEASE
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-devtools
runtime
true
org.springframework.boot
spring-boot-starter-test
test
javax.servlet
javax.servlet-api
provided
javax.servlet
jstl
org.springframework.boot
spring-boot-starter-tomcat
org.apache.tomcat.embed
tomcat-embed-jasper
provided
org.springframework.boot
spring-boot-maven-plugin
配置文件：application.properties
#====================================================
spring.application.name: SpringBootWeb
#server
server.port=80
server.servlet.context-path=/
#====================================================
spring.mvc.view.prefix=/WEB-INF/
spring.mvc.view.suffix=.jsp
# 上传文件大小3M , 默认1M
spring.servlet.multipart.max-file-size= 3145728
spring.servlet.multipart.max-request-size= 3145728
#====================================================
#springboot 整合 mybatis
#mybatis.mapper-locations=classpath:mapper/**/*.xml
#mybatis.type-aliases-package=com.mhcloud.manage.**.domain
#====================================================
#dataSource 数据源
#spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
#spring.datasource.driverClassName = com.mysql.jdbc.Driver
#spring.datasource.url = jdbc:mysql://127.0.0.1:3306/tt_db?useUnicode=true&characterEncoding=utf-8
#spring.datasource.username = root
#spring.datasource.password = 123123
log4j.properties
log4j.rootLogger=info,stdout,logfile
#stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss,SSS} [%t] [%p]-[%C %M %L]-%m%n
#logfile
log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=/usr/local/logs/service.log
log4j.appender.logfile.MaxFileSize=128MB
log4j.appender.logfile.MaxBackupIndex=100
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss,SSS} [%t] [%p]-[%C %M %L]-%m%n
package com.test.controller;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
@Controller
public class UploadController {
@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String watermarkTest(MultipartFile image) throws IOException {
String originalFilename = image.getOriginalFilename();
String typeName = originalFilename.substring(originalFilename.indexOf(".")+1 ,originalFilename.length()) ;
InputStream inputStream = image.getInputStream();
OutputStream outputStream = new FileOutputStream("d://adb."+typeName) ;
WaterMarkUtil.markImageByIO("hello world", inputStream, outputStream, 0, typeName);
outputStream.close();
inputStream.close();
return "redirect:/success.jsp" ;
}
}
package com.test.controller;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.imageio.ImageIO;
/**
* 图片水印工具类
*
*/
public class WaterMarkUtil {
// 水印透明度
private static float alpha = 0.3f;
// 水印横向位置
private static int positionWidth = 50;
// 水印纵向位置
private static int positionHeight = 100;
// 水印文字字体
private static Font font = new Font("宋体", Font.BOLD, 20);
// 水印文字颜色
private static Color color = Color.red;
/**
* 给图片添加水印文字
*
* @param text 水印文字
* @param srcImgPath 源图片路径
* @param targetPath 目标图片路径
*/
public static void markImage(String text, String srcImgPath, String targetPath) {
markImage(text, srcImgPath, targetPath, null);
}
/**
* 给图片添加水印文字、可设置水印文字的旋转角度
*
* @param text
* @param srcImgPath
* @param targetPath
* @param degree
*/
public static void markImage(String text, String srcImgPath, String targetPath, Integer degree) {
OutputStream os = null;
try {
// 0、图片类型
String type = srcImgPath.substring(srcImgPath.indexOf(".") + 1, srcImgPath.length());
// 1、源图片
Image srcImg = ImageIO.read(new File(srcImgPath));
int imgWidth = srcImg.getWidth(null);
int imgHeight = srcImg.getHeight(null);
BufferedImage buffImg = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);
// 2、得到画笔对象
Graphics2D g = buffImg.createGraphics();
// 3、设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(imgWidth, imgHeight, Image.SCALE_SMOOTH), 0, 0, null);
// 4、设置水印旋转
if (null != degree) {
g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
}
// 5、设置水印文字颜色
g.setColor(color);
// 6、设置水印文字Font
g.setFont(font);
// 7、设置水印文字透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
// 8、第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y)
g.drawString(text, positionWidth, positionHeight);
// 9、释放资源
g.dispose();
// 10、生成图片
os = new FileOutputStream(targetPath);
// ImageIO.write(buffImg, "JPG", os);
ImageIO.write(buffImg, type.toUpperCase(), os);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != os)
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 给图片添加水印文字、可设置水印文字的旋转角度
*
* @param text
* @param srcImgPath
* @param targetPath
* @param degree
*/
public static void markImageByIO(String text, InputStream inputStream, OutputStream outputStream,
Integer degree, String typeName) {
try {
// 1、源图片
Image srcImg = ImageIO.read(inputStream);
int imgWidth = srcImg.getWidth(null);
int imgHeight = srcImg.getHeight(null);
BufferedImage buffImg = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);
// 2、得到画笔对象
Graphics2D g = buffImg.createGraphics();
// 3、设置对线段的锯齿状边缘处理
g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(srcImg.getScaledInstance(imgWidth, imgHeight, Image.SCALE_SMOOTH), 0, 0, null);
// 4、设置水印旋转
if (null != degree) {
g.rotate(Math.toRadians(degree), (double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
}
// 5、设置水印文字颜色
g.setColor(color);
// 6、设置水印文字Font
g.setFont(font);
// 7、设置水印文字透明度
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
// 8、第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y)
g.drawString(text, positionWidth, positionHeight);
// 9、释放资源
g.dispose();
// 10、生成图片
ImageIO.write(buffImg, typeName.toUpperCase(), outputStream);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
String srcImgPath = "d:/002.png";
String text = "hello world";
String targerTextPath = "d:/002--1.png";
String targerTextPath2 = "d:/002--2.png";
System.out.println("给图片添加水印文字开始...");
// 给图片添加水印文字
markImage(text, srcImgPath, targerTextPath);
// 给图片添加水印文字,水印文字旋转-45
markImage(text, srcImgPath, targerTextPath2, -45);
System.out.println("给图片添加水印文字结束...");
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath() ;
%>
Insert title here
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath() ;
%>
Insert title here
success .......
原图：
水印图：（浅浅的水印hello world）， 尺寸大小不会变化， 大小一般浮动10KB左右
